This Week in Space (Video)

By TWiT

The new space age is upon us, and This Week in Space leaves no topic untouched. Every Friday, join Editor-in-Chief of Ad Astra magazine, Rod Pyle and Managing Editor of Space.com, Tariq Malik as they ... more

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This Week in Space (Video) episodes:

August 02, 2024TWiS 122: No City on Mars? - A Debate on Human Expansion and the Popular New Book, 'A City on Mars'
It's been said that Mars ain't the kind of place to raise your kids, and that's certainly the assertion of the popular 2023 book, "A City on Mars" by Kelly and Zack Weinersmith. In fact, they question the future of settling humans off Earth in its entirety. Certainly, it will be challenging, but is it impossible? Are there reasons we should not go? We gathered together two of our favorite experts on the topic, Dale Skran, the COO and SVP of the National Space Society, and Mr. YouTube himself, Isaac Arthur—who has produced maybe 100 hours or more of well-regarded videos on the subject—to discuss the book and our prospects for rational, realistic space settlement plans. Join us!
"A City on Mars" takes a skeptical and humorous look at space settlement, questioning our readiness for having children in space, building space farms, and creating independent space nations.

Dale Skran wrote a comprehensive 40,000-word review of the book, acknowledging its depth while disagreeing with many of its conclusions. He believes the book represents the current stage of opposition to the increasingly realistic prospect of space settlement.

The hosts discuss the potential benefits and resources available in space, with Dale and Isaac emphasizing the vast opportunities and the need for reasonable regulation to facilitate space development.

The challenges of human reproduction in space are examined, with the hosts agreeing on the importance of further research and the need for artificial gravity experiments on space stations.

The potential for conflict and war in space is explored, with Dale arguing that space settlements will likely be more resilient and less vulnerable than Earth-based cities due to their designed defenses against natural and artificial threats.

The hosts critique the book's pessimistic view of space settlement and its suggestion to wait centuries until humanity has solved all its problems before venturing into space. They argue that space development and solving Earth's issues can and should happen concurrently.

Dale Skran highlights an interesting idea from the book: the possibility of a dual life cycle for settlers, with reproduction occurring in 1G spin gravity settlements while adults spend much of their time working in low-gravity environments like the Moon or Mars.

Get "A City on Mars": https://amzn.to/3LWMhY1

Host: Rod Pyle

Co-Host: Isaac Arthur

Guest: Dale Skran

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1h 1min
July 26, 2024TWiS 121: An Exploding Star Near You! - A Nova is Coming with Carlos Badenes
A nova is a star that periodically sheds mass in a huge flare-up of light and energy. This week, astrophysicist Dr. Carlos Badenes from the University of Pittsburgh joins us to discuss a star that should be going nova in the next few weeks--and will be visible in the night sky for about 6-7 days! T Corona Borealis (TCrB) is a binary system comprising two stars in the constellation Corona Borealis that bursts into magnitude 2 (as seen from Earth) about every 80 years--and should do so again by mid-September! Join us.
Headlines:
NASA's Perseverance rover discovers a rock on Mars that shows intriguing signs of potential ancient microbial life, sparking excitement among scientists

Starliner Update: NASA and Boeing discuss the extended mission of the Starliner spacecraft, addressing concerns and highlighting the crew's safety and productivity

Scientists uncover evidence suggesting Mercury's crust harbors a 10-mile thick diamond layer, formed by unique planetary processes
Main Topic - The Visible Nova in the Sky Near You:
T Coronae Borealis, a recurring nova located in the constellation Corona Borealis, is expected to become visible to the naked eye between now and September 2024

Novae are binary star systems where a white dwarf accumulates material from its companion star, leading to a thermonuclear runaway and a bright outburst

Supernovae, in contrast, are the explosive deaths of stars, either through the complete disruption of a white dwarf or the collapse of a massive star's core

Historical accounts of "new stars" include Tycho's Supernova (1572), Kepler's Supernova (1604), and the Crab Nebula progenitor (1054)

Dr. Badenes discusses his research on novae in nearby galaxies and the use of the Hubble Space Telescope to study the progenitors of thermonuclear supernovae

The crew explores the limits of recurring novae, the possibility of a white dwarf exploding as a Type Ia supernova, and the anticipated supernova of the star Betelgeuse in the constellation Orion

Hosts: Rod Pyle and Tariq Malik

Guest: Carlos Badenes

Download or subscribe to this show at https://twit.tv/shows/this-week-in-space.

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1h 12min
July 19, 2024 TWiS 120: Remembering Apollo 11 & Looking Ahead - Plus Artemis II and Starship 5
In this episode of This Week in Space, Rod Pyle and Tariq Malik dive into the 55th anniversary of the Apollo 11 moon landing, discussing the mission's highlights, challenges, and historical significance. They also cover recent space news, including Elon Musk's plans to move SpaceX's headquarters to Texas, the Falcon 9 upper stage failure, and the cancellation of NASA's VIPER rover mission. Looking ahead, the hosts speculate on the future of the Artemis program and the political landscape's influence on space exploration.

Headlines:

- Elon Musk announces plans to move SpaceX's headquarters from California to Texas, citing disagreements with a new state law and his political alignment with Texas.

- SpaceX's Falcon 9 rocket experiences an upper stage failure during a recent launch, leading to the loss of payload and an investigation by the FAA and NASA.

- NASA cancels its VIPER rover mission, which aimed to search for water ice at the Moon's south pole, due to budget constraints and scheduling issues with the Astrobotic Griffin lander.

- Lou Dobbs, the co-founder of Space.com, passes away at the age of 78.

Apollo 11 55th Anniversary:

- Rod Pyle shares his memories of watching the Apollo 11 launch and moon landing as a teenager, highlighting the limited media coverage and resources available at the time.

- The hosts discuss the tense moments during the lunar module's descent, including computer alarms, low fuel warnings, and Neil Armstrong's quick thinking to avoid a boulder field.

- They recount the challenges faced by the astronauts, such as the difficulty in opening the lunar module's hatch and Buzz Aldrin's ingenious use of a felt-tip pen to reset a broken circuit breaker.

- The hosts emphasize the significance of the Apollo 11 mission and argue for July 20th to be recognized as a national holiday.

Artemis Program and the Future of Space Exploration:

- Rod and Tariq express frustration with the slow progress of the Artemis program compared to the rapid pace of the Apollo missions.

- They discuss the potential impact of the upcoming U.S. presidential election on NASA's funding and priorities, particularly in light of the growing competition with China in space.

- The hosts highlight the challenges facing SpaceX's Starship as the chosen vehicle for the Artemis program's human landing system, including the need for further testing and the development of a 120-foot elevator to transport astronauts to the lunar surface.

- Tariq makes a bold prediction that NASA astronauts will be walking on the Moon by July 20th, 2029, and offers to give Rod his "STar Trek" chair if the prediction doesn't come to pass.

Hosts: Rod Pyle and Tariq Malik

Download or subscribe to this show at https://twit.tv/shows/this-week-in-space.

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1h 17min
July 12, 2024TWiS 119: Junkyard in Space - The Dangers of Orbital Debris
If you saw the movie "Gravity," you have a sense of the dangers of orbital debris—and the risk is very real. More than 25,000 objects over four inches in diameter are tracked by the US Space Force, and millions of others are smaller or untracked—everything from derelict satellites to dead rocket stages to bits of shrapnel and even just chunks of frozen rocket fuel is there. And even something the size and mass of a paint chip, traveling at orbital speeds, can take out a window of a spacecraft. We're joined by Dr. John Crassidis from the University of Buffalo, an expert in orbital debris and its dangers. Look out below; this is going to be a hot one!
Headlines:
SpaceX Falcon 9 launch failure investigation underway after engine explosion during upper stage relight

James Webb Space Telescope celebrates 2nd anniversary with new "Cosmic Penguin" image

Boeing Starliner return date still uncertain as NASA and Boeing review data
Mailbag:
Zaheer Mohammed congratulates the National Space Society's Ad Astra magazine on winning the Marcom Awards in 2023
Main Topic: Orbital Debris Discussion with Dr. John Crassidis
Orbital debris defined as anything in space that is no longer useful, ranging from paint flakes to rocket bodies

Debris moves at extremely high speeds (17,500 mph), making collisions highly destructive

Kessler Syndrome: cascading collisions could render low Earth orbit unusable within 50 years if debris growth is not slowed

Approximately 47,000 tracked objects softball-size or larger, with millions more smaller pieces

Challenges in tracking debris due to limited coverage, object tumbling, and modeling uncertainties

Ownership and responsibility for debris removal complicated by lack of international agreements

Current remediation techniques not feasible due to cost and technological limitations

Urgent need for debris mitigation through international cooperation and improved satellite design

Future threats extend beyond low Earth orbit, with debris already accumulating around the Moon

Importance of investing in research to develop effective debris removal technologies

Hosts: Rod Pyle and Tariq Malik

Guest: Dr. John Crassidis

Download or subscribe to this show at https://twit.tv/shows/this-week-in-space.

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1h 4min
July 05, 2024TWiS 118: Understanding the Darkness - Dark Matter and Dark Energy
For many of us, dark matter and dark energy are two of the least understood areas of cosmology and astrophysics. This week, we invited Alina Kiessling and Jason Rhodes, both Research Scientists at NASA's Jet Propulsion Laboratory, to explain these concepts and their broader implications for cosmology, exoplanet research, and more. Both of them are working on major space telescope projects to research "dark physics," as they will explain. Guest co-host Isaac Arthur asks compelling, comprehensive questions about physics and cosmology while Rod asks things like "is dark energy dangerous?" because, let's face it, someone has to ask the dumb questions. Join us for the fascinating deep dive into dark forces!
Headlines:
Chinese rocket startup Space Pioneer accidentally launched a rocket during a static ground test, highlighting the unpredictable nature of rocketry.

SpaceX and Jared Isaacman's Polaris Dawn mission, set for July 34th, 2024, aims to conduct the first private spacewalk and set a new orbital altitude record of 870 miles.

NASA announced that Boeing's Starliner spacecraft is in good enough condition to stay at the International Space Station for at least 45 days despite ongoing investigations into malfunctioning thrusters and helium leaks.
Main Topic - Understanding the Darkness:
Guests Jason Rhodes and Alina Kiessling, both Research Scientists and Astrophysicists at JPL, share their backgrounds and how they met through their shared passion for cosmology.

The universe's composition, with dark matter and dark energy making up 95% of its content.

Exploring the history of dark matter discovery, from Fritz Zwicky's observations in the 1930s to Vera Rubin's groundbreaking work in the 1960s and 70s.

The differences between dark matter and dark energy, their effects on the universe's structure, and the challenges in studying them.

The "cosmological crisis" or Hubble tension, which arises from discrepancies between early and late universe measurements.

Upcoming space telescope missions, including Euclid, the Nancy Grace Roman Space Telescope, and the Vera Rubin Observatory, are highlighted as crucial tools for advancing our understanding of dark matter and dark energy.

The potential need for new physics to explain current observations is explored, with the guests expressing excitement about the possibility of groundbreaking discoveries.

Exoplanet research: discussing how the Roman Space Telescope will use microlensing and coronagraphy techniques to detect and study distant worlds.

The potential for detecting biosignatures on exoplanets, with a focus on identifying signs of life through spectroscopic analysis.Jason and Alina's advice for aspiring astrophysicists, emphasizing the growing importance of machine learning and artificial intelligence in the field.

Finally, a lighthearted discussion of the guests' personal lives and travel experiences, highlighting the balance between their professional and family commitments.

Host: Rod Pyle

Co-Host: Isaac Arthur

Guests: Jason Rhodes and Alina Kiessling

Download or subscribe to this show at https://twit.tv/shows/this-week-in-space.

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1h 9min
June 28, 2024 TWiS 117: A Home on the Moon - 3D Printing Lunar Habitats
For decades we've seen images of huge glass domes on the moon and Mars, but the reality of building settlements off-Earth is likely to look much different. This week we're joined by Evan Jensen of ICON Build, a company that, in just a few years, has created housing across Texas via 3D printing. Now, in association with NASA, they are also investing heavily in researching how to 3D print habitats on the moon and one day Mars. It isn't easy working in a vacuum--water freezes and evaporates instantly, and any other materials you need must be transported there. ICON has some unique processes they are testing in their large vacuum chambers, and the results are truly fascinating. Join us for a look into the future of living on other worlds!

Headlines:

- NASA has selected SpaceX for a $843 million contract to de-orbit the International Space Station (ISS) around 2030

- ISS astronauts took shelter after a Russian satellite exploded, creating over 100 pieces of shrapnel

- Boeing's Starliner capsule faces an indefinite delay in its return from the ISS due to technical issues

Feedback:

- Listener Tim Lazaroff suggests two space-themed songs by the group Lord of the Lost

- Rod Pyle addresses inquiries about the decision to de-orbit the ISS, explaining the aging technology and high maintenance costs

Main Topic: 3D Printing for Construction on Earth and Beyond with Evan Jensen

- ICON's founders started the company in 2018 to push the limits of 3D printing technology for construction

- ICON has completed several projects, including the House of Phoenix and a 3D-printed neighborhood in Texas

- Project Olympus aims to use 3D printing for construction on the Moon and Mars, utilizing in-situ resources

- On the Moon, ICON plans to use a laser-directed energy deposition system to melt and solidify lunar regolith

- Challenges of lunar construction include the unsuitability of water in the concrete mix, extreme temperatures, and the need for robotic systems

- ICON is developing lunar regolith simulants and testing robotic systems in their "Moon Box" facility

- Mars construction may involve more traditional materials, but thermal energy deposition could still be viable

- ICON's Vitruvius AI architecture model allows users to design homes based on their preferences and needs

- The company's ultimate goal is to use robotics, automation, and AI to help solve the global housing crisis on Earth while enabling a sci-fi future of extraterrestrial habitation

Host: Rod Pyle

Co-Host: Isaac Arthur

Guest: Evan Jensen

Download or subscribe to this show at https://twit.tv/shows/this-week-in-space.

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1h 10min
June 21, 2024 TWiS 116: Spreading the Good Word - With the Space and Things Podcast
In the world of space podcasts, the Space and Things podcast is a keeper (along with ours, of course). The brainchild of Emily Carney, founder of the Space Hipsters on Facebook, and singer/songwriter Dave Giles, Space and Things brings us some premiere guests in the space sector. Subjects are always compelling, and as we well know, that takes work. We'll dive into the intricacies of creating--and maintaining--a quality space podcast and the success of Emily's Facebook group, the Space Hipsters, now 62,000 members strong.

Headlines:

- Boeing's Starliner mission extended to June 26th for further testing of thrusters and leaks before undocking and landing at White Sands Space Harbor (no, the astronauts are not "stuck" in space)

- Rocket Lab achieves 50th launch of their Electron rocket, reaching the milestone faster than SpaceX's Falcon 9 and other major launch providers

- June 24th marks the first full moon of summer, also known as the Strawberry Moon

Main Topic: Interview with Emily Carney and Dave Giles from Space and Things Podcast:

- Space and Things podcast focuses on space and its intersection with art, popular culture, and other unique aspects, with over 200 episodes released

- Emily and Dave share their personal space experiences, including Emily's childhood memories of watching Space Shuttle launches and Dave's visit to the Kennedy Space Center

- The podcast features a diverse range of guests, including astronauts, their children, historians, and space enthusiasts, covering topics beyond the typical space discussions

- Emily discusses her Facebook group, Space Hipsters, which has grown to over 62,000 members and aims to create an inclusive community for space enthusiasts

- The importance of space fan clubs in providing a sense of belonging and a platform for space enthusiasts to connect and share their passion

- The guests discuss their dream podcast guests, with Emily choosing Gerard O'Neill and Dave selecting Tom Hanks and Jim Lovell

- Emily and Dave express their eagerness to participate in commercial spaceflight if given the opportunity

- The episode concludes with a discussion on the best space-themed songs, with the hosts and guests sharing their personal favorites

Hosts: Rod Pyle and Tariq Malik

Guests: Emily Carney and Dave Giles

Download or subscribe to this show at https://twit.tv/shows/this-week-in-space.

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1h 6min
June 14, 2024TWiS 115: Our Friendly Mr. Sun - Mr. Sun: Friend or Foe? With Dr. Alex Young
We see the sun every day as it rises and sets... it's one of the few constants in life. But it's a very dynamic body, throwing minor temper tantrums regularly. As it happens, we're at the peak of its 11-year cycle of activity and there's a lot going on! Dr. Alex Young, the Associate Director for Science in the Heliophysics Science Division at NASA's Goddard Space Flight Center, joins us to talk about the sun, solar activity cycles, the recent solar storms that have given us auroras and some communications blackouts, the science from the Parker solar probe, and much more. Don't take the friendly Mr. Sun for granted--join us for this fascinating episode!
Headlines:
NASA's accidental broadcast: A simulated medical emergency on the International Space Station was mistakenly aired for 8 minutes, causing brief panic before clarification.

Spacewalk canceled: Just before a planned spacewalk, NASA canceled the event citing spacesuit discomfort, with few details provided.

Voyager 1 update: The spacecraft is now sending back data from all four of its working instruments, a remarkable feat for the 47-year-old probe.

Remembering Bill Anders: The Apollo 8 astronaut, known for the iconic Earthrise photo, passed away at 90 after a private plane crash.
Main Topic - Our Friendly Mr. Sun:
Heliophysics defined: Dr. Young explains that heliophysics studies the sun's atmosphere and its interactions with Earth and the solar system.

Solar activity cycle: Currently near solar maximum, the sun is exhibiting increased sunspots, solar flares, and coronal mass ejections.

Space weather impacts: Solar activity can affect technology, causing communication disruptions, satellite damage, and even power grid outages.

Solar observation: A variety of spacecraft monitor the sun, including NASA's Solar Dynamics Observatory and NOAA's GOES satellites.

Parker Solar Probe: This groundbreaking mission is providing unprecedented data about the sun's corona and solar wind.

Solar magnetic field: The sun's magnetic field flips every ~11 years, which can lead to increased solar activity during the transition.

Carrington Event: This 1859 solar storm remains the benchmark for extreme space weather, causing telegraph systems to catch fire.

Sun in pop culture: Rod, Tariq, and Dr. Alex Young discuss depictions of the sun in science fiction, separating fact from fiction.

Solar research: Dr. Young shares his current work on the statistics of large solar events and improving science communication.

Hosts: Rod Pyle and Tariq Malik

Guest: C. Alex Young

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1h 8min
June 07, 2024TWiS 114: Starliners & Starships - Boeing's Redemption, SpaceX's Ambition
Well, we waited, we waffled, and we joked... but Boeing's Starliner finally made good! Seven or so years after their projected crewed flight date, the second provider of crew delivery to the International Space Station finally succeeded in sending two astronauts, Butch Wilmore and Sunita Williams, to the ISS. Despite a few problems with (sigh) valves, helium tanks, and thrusters, the mission appears to be going swimmingly. Then, just a day later, SpaceX launched a Starship on a fourth test flight with spectacular results--and may be ready for another test launch within a few weeks. All good news this week, and it feels like newspace just picked up a lot of steam. Join us!
Headlines:
China's Chang'e-6 mission successfully collected up to 2,000 grams of lunar samples from the far side of the moon and launched them back to Earth.

The Hubble Space Telescope faces gyroscope issues, prompting NASA to use only one gyroscope to extend its lifespan until around 2035.

A lava tube discovered on Mars near the Arsia Mons extinct volcano could potentially shelter future human habitats or host microbial life.

A new star, "Blaze Star" T Coronae Borealis, may appear in the night sky between now and September, becoming the first visible nova since 1946.

Main Topic - Starliner and Starship:
Boeing's Starliner successfully launched, rendezvoused, and docked with the International Space Station, despite some thruster and cooling system issues.

The mission marks the first time in decades that astronauts have launched from Cape Canaveral Space Force Station on an Atlas V rocket.

Starliner's reusability and cost per seat are compared to SpaceX's Crew Dragon and Russia's Soyuz spacecraft.

SpaceX's Starship completed a successful test flight, with the Super Heavy booster and Starship vehicle performing well despite some heat shield damage during reentry.

The hosts discuss the progress and challenges of Starship development, including the recent cancellation of Yusaku Maezawa's "dearMoon" mission.

SpaceX's rapid launch cadence and plans for mass-producing Starship vehicles and engines are highlighted, along with the company's vision for catching Super Heavy boosters with the "Mechazilla" launch tower.

Hosts: Rod Pyle and Tariq Malik

Download or subscribe to this show at https://twit.tv/shows/this-week-in-space.

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1h 17min
May 31, 2024TWiS 113: China's Heavenly Dream - Chang'e 6 and China's Lunar Ambitions With Mike Wall
In this episode of This Week in Space, Rod Pyle and Tariq Malik discuss the latest updates on Boeing's Starliner spacecraft, the potential for aurora sightings due to increased solar activity, and China's ambitious lunar exploration program with returning guest Mike Wall, Spaceflight Editor at Space.com. The conversation focuses on China's upcoming Chang'e 6 mission, its capabilities, and the implications of China's growing presence on the Moon. The hosts also touch upon the nationalistic aspects of the new space race between the United States and China.
Headlines:
Boeing's Starliner update: The spacecraft is ready for launch on June 1st, despite recent issues with parachutes, wiring, and helium leaks.

Venus Exploration: Japan's Akatsuki probe, currently the only active mission at Venus, has lost contact with JAXA. However, NASA, ESA, and private companies like Rocket Lab are planning future missions to explore the planet.

SpaceX Dragon capsule debris found in North Carolina: A piece of the trunk, about the size of a small coffee table, was discovered on a hiking trail.

Increased solar activity may lead to Aurora sightings: A giant sunspot has returned, and its intense activity could trigger powerful Aurora displays.
Main Topic - China's Lunar Ambitions and the New Space Race:
Chang'e 6 Mission: China is set to launch the Chang'e 6 mission to the far side of the moon's southern polar region, with the goal of returning samples. The mission is part of China's ambitious lunar exploration program.

International Collaboration: Although US-China collaboration is limited, Chang'e 6 includes contributions from France, Italy, Sweden, and Pakistan.

Future Chinese Lunar Missions: China plans to launch Chang'e 7 in 2026, featuring an orbiter, rover, and a hopping robot, and Chang'e 8 in 2028, which will attempt 3D printing using lunar regolith.

Artemis Accords and the Outer Space Treaty: As China and the US both aim to establish a presence on the moon, questions arise about territorial claims and the enforcement of the Outer Space Treaty.

Space Race Rhetoric: Both the US and China have engaged in nationalistic rhetoric regarding their lunar ambitions, with concerns about China's potential to claim exclusive rights to lunar resources.

Scientific Significance: Despite the geopolitical tensions, Chang'e 6 and future missions from both nations have the potential to greatly advance our understanding of the moon and its environment.

Hosts: Rod Pyle and Tariq Malik

Guest: Mike Wall

Download or subscribe to this show at https://twit.tv/shows/this-week-in-space.

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1h 8min

FAQs about This Week in Space (Video):

How many episodes does This Week in Space (Video) have?

The podcast currently has 55 episodes available.

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